Removing and Replacing the I/O Baseboard
These procedures detail how to remove the I/O baseboard from the server. The I/O baseboard
is removed from the rear of the server.
WARNING! Ensure that the server is powered off and all power sources have been disconnected
from the server prior to removing or replacing the I/O baseboard assembly.
Voltages are present at various locations within the server whenever an AC power source is
connected. This voltage is present even when the main power switch is in the off position.
Failure to observe this warning can result in personal injury or damage to equipment.
CAUTION: Failure to properly complete the steps in this procedure results in erratic server
behavior or server failure. For assistance with this procedure contact your local HP Authorized
Service Provider.
Observe all ESD safety precautions before attempting this procedure. Failure to follow ESD safety
precautions can result in damage to the server.
Removing the I/O Baseboard
To remove the I/O baseboard, follow these steps:
1. If rack mounted, slide the HP server out from the rack until it stops. See “Extending the
Server From the Rack” (page 31).
2. Remove the top cover. See “Removing the Top Cover” (page 36).
3. Remove the three chassis fan units. See “Removing a Hot-Swappable Chassis Fan Unit”
(page 53).
4. Unplug all external cabling attached to ports at the rear of the I/O baseboard.
5. Unplug the SCSI cables attached to the HBA board in PCI slot 1.
CAUTION: When unplugging the SCSI cables, note the labeling on the SCSI A and SCSI B
channel cables. When plugging in these cables, you must match each cable with its
appropriate socket on the SCSI HBA. If the cables are mismatched your server may not
reboot. Both cables and sockets are clearly marked with the correct channel.
6. To unplug the I/O baseboard from the socket on the midplane riser board, lift up on the
locking lever attached to the side of the power supply cage. Figure 4-22 shows the locking
lever.
56 Removing and Replacing Components
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